Lay operable transfer setting device



Dec. 2, 1941. J. STUER LAY OPERABLE TRANSFER SETTING DEVICE Filed Feb. 14, 1941 2 Sheets-Sheet 1 ,XQ T ;WM

Dec. 2, 1941. J. STUER 2,264,462

LAY OI ERABLE TRANSFER SETTING DEVICE Filed Feb. 14, 1941 2 Sheets-Sheet 2 BY 2 M I FIG. 16

Patented Dec. 2, 1941 UNiTED STATES PATENT OFFICE LAY OPERABLE TRANSFER SETTING DEVICE Joseph Stuer, Lawrence, Mass.

Application February 14, 1941, Serial No. 378,930

4 Claims.

This invention is an improvement on the trigger latch release mechanism on the type of magazine looms where there is a spring operable or loaded means held out of action by a trigger arm, such loaded means when released being of the type to set a dog for bobbing transfer by the forward movement of the lay.

A construction of this sort is shown in Unite States Letters Patent issued to me, Joseph Stuer, on July 9, 1940, No. 2,207,078 and in application for United States Letters Patent filed by me on June 29, 1940, Serial No. 343,230 and in application for United States Letters Patent filed by me on March 5, 1940, Serial No. 322,308, both pending.

In this type of loom, there is a feeler which normally moves in a certain way but in a different way when the filling on a bobbin is almost exhausted and which, when it indicates exhaustion, through either mechanical or electric means releases a trigger arm from a latch arm carried by the loaded means thus allowing the loaded means to act.

I find that where the vertical movements of a shuttle box are utilized, as in the last named application, the release of the trigger latch is easily produced but where, as in the Patent No. 2,207,078, and in some the types shown in application, Serial No. 343,230 where an electro-magnet or electric solenoid is the source of releasing power, the friction between the notch in the trigger arm and the end of the latch arm is so great that the magnet or solenoid must be so large as to be in the Way.

This invention therefore is devised for the purpose of utilizing the powerful movement of the lay to release the trigger latch.

I accomplish this in a general Way by pivoting at the back end of the trigger arm a cam follower which may be in the form of a bell crank lever or two armed member which normally is in such a position that it will not be engaged by a release cam carried. by the lay but which when the feeler indicates exhaustion will be so moved that one arm will be engaged by the cam thus raising the back of the trigger arm and pressing the front end down thereby releasing it from the latch arm.

The type of loaded mechanism which when released moves such devices as a transfer dog, a thread cutter or other parts must have a powerful spring to operate in a satisfactory manner. It is understood also that with any hammer and trigger or latch and trigger construction where one part is held out of action by bearing against cut at any angle so that either a very light pull or a very heavy pull is required to release them.

A hair trigger device in a loom which is shaking constantly i unreliable and it is therefore preferable that a powerful pull should be required to disengage theparts. On the other hand, the action of a feeler is relatively delicate and while an electric switch can readily be operated by a feeler, the solenoid or magnet which is energized must be large and powerful to pull the trigger.

This device is therefore intermediate between a feeler and a latch and trigger mechanism to so utilize the normal powerful movement of some part of a loom for releasing th latch by interposing a part which can easily be moved by the feeler into a position where, at the desired time, it will transmit the force of such a powerful part to the trigger arm or release mechanism for releasing the loaded means.

In the drawings,

Fig. 1 is an isometric, substantially diagrammatic view of the parts of my invention only such parts of the loom being shown as are necessary to understand it.

Fig. 2 is a diagrammatic elevation of the above parts.

Fig. 3 is an end elevation of a trigger arm with its cam follower and Figs. 4, 5, and 6 are side elevations of the Fig. 3 showing the different positions of the trigger arm and cam follower with reference to the cam.

Fig. 7 is a diagrammatic plan view and Fig. 10 is an elevation of a modification of the device.

Figs. 8 and 9 are plan views each being partly broken away and in section, of a type of feeler which I use in connection with the constructions shown in Figs. 7 to 14.

Fig. 11 is a view similar to Fig. 10 of another modification.

Fig. 12 i a diagrammatic plan View and Fig. 13 a diagrammatic elevation of another modification.

Fig. 14 is a diagrammatic elevation and Fig. 17 is a diagrammatic plan view of another modification.

Figs. 15 and 16 are diagrammatic elevations of another method of operating a trigger arm by means of the cam and and cam follower or equivalents.

In the drawings, D represents the stationary frame of a loom of the type in which there is a magazine 93 which carries a plurality of bobbins which are individually automatically transferred a nose, the nose or the part it engagescan be to a shuttle by transfer mechanism M when a means A to move the dog 90 to transferring position. 9! is th actuator spring and B is a latch arm which is normally held out of action by a trigger arm T, pivoted at 92 to frame. D. This loaded means A can not only set the transfer mechanism but it can alsojoperate other devices such as are shown in said application, or a thread cutter shown in said Letters Patent No. 2,207,078;

When the trigger arm T is dis-engaged from latch arm by any which may be a solenoid operable from a feeler such as F, the latch arm and the actuator are moved by spring 9! to set the transfer mechanism for transfer.

In said Letters Patent. I show a solenoid which pulls one end of the trigger arm thereby releasing it from the latch arm and allowing the loaded means, or actuator such as A, to operate.

I have encountered the difficulty that a very large, powerful solenoid is required to release this trigger arm from the latch arm as the spring on the loaded means must be powerful.

I have therefore devised a mechanism between the feeler especially one at the back of the loom, and the trigger arm whereby a cam follower R attached to or pivoted on the trigger arm will be held normally in such a position that a release cam carried by the lay will pass under it but so that when and if the feeler indicates transfer, the solenoid needs to be strong enough to merely move the cam follower into position so that when the cam moves forward on the return stroke, it will engage the cam follower and lift that end of the trigger arm and release the latch arm thus setting the parts for transfer.

As shown in Figs. 1 to 10 this cam follower R is of L- hape or bell crank shape and is pivoted at l on a block I with a stop 8 at the back end of the trigger arm T, one arm being indicated by 2 and the other by 3.

By means of a connection such as a wire 4 attached to arm 3, a solenoid such as 5 connected with a feeler F as by electrical connections indicated by 6, the solenoid 5 pulls up arm 3 and moves arm 2 in front of a cam C carried by lay L. 1' can such an electrically operable feeler as shown and described in my said pending application or such a ieeler and solenoid as shown in my Letters Patent specified above.

At the end of the trigger arm T is a block I with a stop 8 to limit the movement of the cam follower R there is also a spring 50 which, when the solenoid is not energized keeps the arm 2 out of the way of the cam and resting against stop 8.

Where a feeler which closes an electric circuit for a solenoid is used, it may be located at the front or at the back of the loom and in fact on either side or in any location, and where, as in my co-pending application on Front of magazine feeler loom, filed on March 5, 1940, Serial No. 322,308, the feeier is at the front on the magazine side and moves up and down with a drop box, the force of the moving drop box can be utilized to release the trigger arm from the latch arm but in some looms, I wish to use a feeler at the back on the magazine side and to connect it mechanically with the back end of a medially pivoted trigger arm in one of the following ways:

As shown in Figs. 7, 8, 10, I can use a feeler E supported by the loom frame D and including a feeling finger ll pivoted at I2 in such a manner that when it slips on a bobbin IS, a projection l3 will move out, against the pressure of spring l4, as shown by the dotted lines.

G indicates release means and includes a supporting arm 20 for the bearing 2| for a rocking member I-I including an arm 23 in operative relation with the projection l3 of the feeler and another arm 24 which has an extension 22 which goes under the arm 3 of the cam follower R, the parts being so arranged that, as shown in Fig. 8, when the projection I3 is moved out against arm 23, when feeling finger ll slips on a bare bobbin, the end 22 and the arm 2 cf cam follower B are lifted thus bringing arm 2 of cam follower R down in front of the cam C. This construction may be varied as shown in Fig. 11.

The same kind of a feeler E can be used but the release means K include a supporting arm 30 with a slide bearing 3! for a slidable member N which has an arm 33 which is in operative relation with the projection l3 and has another arm 32 which bears against a slightly different type of cam follower O. This cam follower O is pivoted at 34 to the end of a trigger arm T and is normally held by a spring 35 out of the way of the cam C. It is formed with only one arm instead of two, and, as shown by the dotted lines in Fig. 11, it moves with the slidable release means N when projection l3 engages arm 33. Spring 35 returns cam follower O and spring 36 returns member N to their usual positions when the lay moves away allowing the feeling finger H to be moved back into position by the action of its spring M.

In Figs. 9, l2 and 13, I shOW another connecting means P between a feeler such as E on the frame D of the loom at the back and a cam follower 40 pivoted to the back end of a trigger arm T at 4 I. This is normally held down by a spring 42 in a position to engage the cam C but can be pulled out of the way as shown by the dotted lines in Fig. 13 by a cord, chain or wire 43 which passes over a pulley M revoluble on an arm 45 and extending from there to another arm 46 fixed to the back end ll of the slide 48 of fecler E. This slide 48 moves back and forth in a well known manner when engaged by a full bobbin in a live shuttle in the lay, but when the finger 49 slips on a bare bobbin, it does not move back, the result being that the cam follower 36 remains in position to be struck by the cam C. It will be seen that these connections are somewhat different from those first described but the principle is the same.

In Figs. 14 and 17, I show how the connecting means S between the trigger arm T and a back or wherever desired.

The solenoid 50 however is carried by the lay L and there is no cam follower at the back of the trigger arm 51 but a downwardly projecting part 52 which is ordinarily cleared by the bell crank shaped device 53 having a horizontal arm 54 and a vertical arm 55, the horizontal arm normally being held down out of the way of part 52 as by a spring 56.

The vertical arm 55 is connected by a wire or a similar connection 57 to solenoid so that when the solenoid is energized as by the action of the feeler F on a suitable switch, current flows from the ground through the conductor 60 to the feeler switch 6|, thence by conductor 62 to the source of electric current 63 thence to the solenoid 50 by conductor 64 and from the solenoid 50 back to the ground by conductor 66.

In Figs. and 16, I show the connecting means between the trigger arm and feeler as so arranged that the trigger arm 12 can be pivoted at one end and its other end will be pulled down against a spring 8!] by the forward motion of the lay L when a feeler at the back has indicated exhaustion of the filling on a bobbin.

B represents a latch arm with an end Ill which, when the device is set, is held by the notch H in the trigger arm 12 which arm is pivoted at the other end at E3 to the frame D of the loom.

The bell crank lever i4 is pivoted on one side of trigger arm i2 and can be moved against spring 18 by solenoid 15 so that a projecting pin it acting as a cam follower is carried into the path of a short cam face 11 on lay L. When this occurs and lay L moves forward in the direction of the arrow, cam 'I'I engages follower 16 thus pulling down the notch end of arm 12 and releasing latch B. As the lay continues forward, cam 11 clears 76 as shown by the dotted lines.

When the parts are re-set, cam 11 moves back and forth with lay L under follower 16 until the feeler energizes the solenoid l5 and drops follower 16 into its path.

I claim:

1. The combination in a loom including a movable lay and a stationary frame, a feeler at the back carried by the frame, bobbin transfer mechanism including a transfer dog and loaded means pivoted to the frame to move the transfer dog to transfer position, said loaded means including a latch arm; of a trigger arm medially pivoted to the loom frame with a notch near its front end in position to engage the latch arm to hold the loaded means inoperative and with its other end extending towards the back of the loom; a cam follower pivoted to the back of the trigger arm; a release cam carried by the lay in a position to engage the cam follower when moved into its path; and means including a solenoid in an electric circuit controlled by a switch operable by certain movements of the feeler to move the cam follower into the path of the cam whereby the cam engages the follower and the movement of the lay disengages the trigger arm from the latch arm.

2. The combination in a loom including a movable lay and a stationary frame, a feeler, bobbin transfer mechanism including a transfer dog and loaded means pivoted to the frame to move the transfer dog to transfer position, said loaded means including a latch arm; of a trigger arm medially pivoted to the loom frame with its front end in position to engage the latch arm to hold the loaded means inoperative and with its other end extending towards the back of the loom; a cam follower pivoted to the back of the trigger arm; a release cam carried by the lay in a position to engage the cam follower when moved into its path; and means operable by certain movements of the feeler to move the cam follower into the path of the cam whereby the cam engages the follower and the movement of the lay disengages the trigger arm from the latch arm.

3. The combination in a loom including a movable lay and a stationary frame, a feeler carried by the frame, bobbin transfer mechanism including a transfer dog and loaded means pivoted to the frame to move the transfer dog to transfer position, said loaded means including a latch arm; of a trigger arm pivoted to the loom frame with a notch near its front end in position to engage the latch arm to hold the loaded means inoperative; a cam follower pivoted to the trigger arm; a release cam carried by the lay in a position to engage the cam follower when moved into its path; and means operable by certain movements of the feeler to move the cam follower into the path of the cam whereby the cam engages the follower and the movement of the lay disengages the trigger arm from the latch arm.

4. The combination in a loom including a movable lay and a stationary frame, a feeler, bobbin transfer mechanism including a transfer dog and loaded means pivoted to the frame to move the transfer dog to transfer position, said loaded means including a latch arm; of a trigger arm pivoted to the loom frame with a notch near one end in position to engage the latch arm to hold the loaded means inoperative; a first release cam member carried by the trigger arm; a second release cam member carried by the lay in position to move near the first release cam member as the lay beats up; and means operable by the feeler when it engages a bare bobbin to move one of the cam members into the path of the other cam member whereby the cam member carried by the lay engages the cam member carried by the trigger arm as the lay moves and the movement of the lay disengages the trigger arm from the latch arm.

JOSEPH STUER. 

